125544213 has 6 divisors (see below), whose sum is σ = 181341654. Its totient is φ = 83696136.

The previous prime is 125544187. The next prime is 125544233. The reversal of 125544213 is 312445521.

It can be written as a sum of positive squares in only one way, i.e., 107371044 + 18173169 = 10362^2 + 4263^2 .

It is not a de Polignac number, because 125544213 - 2⁶ = 125544149 is a prime.

It is a super-2 number, since 2×125544213² = 31522698835578738, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125544233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6974670 + ... + 6974687.

It is an arithmetic number, because the mean of its divisors is an integer number (30223609).

Almost surely, 2^125544213 is an apocalyptic number.

It is an amenable number.

125544213 is a deficient number, since it is larger than the sum of its proper divisors (55797441).

125544213 is a wasteful number, since it uses less digits than its factorization.

125544213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13949363 (or 13949360 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 125544213 is about 11204.6514001998. The cubic root of 125544213 is about 500.7245668320.

Adding to 125544213 its reverse (312445521), we get a palindrome (437989734).

The spelling of 125544213 in words is "one hundred twenty-five million, five hundred forty-four thousand, two hundred thirteen".